4.2 - Thermopile Infrared Arrays with ultra wide field of view for person detection and building automation
- AMA Conferences 2017
2017-05-30 - 2017-06-01
- Proceedings IRS² 2017
- I4 - Recent Developments in IR Industry
- R. Funk, J. Schieferdecker, M. Simon, B. Forg, M. Schnorr, F. Herrmann, C. Schmidt - Heimann Sensor GmbH, Dresden (Germany)
- 797 - 799
Ultra wide field of view (UWFOV) optics for thermography are suitable for surveillance due to the fact, that a wide area (especially in rooms) can be overviewed with a small number of sensors. Heimann Sensor GmbH has developed thermopile arrays with 32x32 pixels (>90x90 deg FOV) and 80 x 64 pixels giving an UWFOV optics up to 90° x 120° observation. Furthermore, it has been accomplished, that objects within a FOV of 150° can be detected over a rotationally symmetrical image field with a diameter of 91 pixels without significant losses of signal due to vignetting. The UWFOV application has been achieved by utilization of spherical distortion. The optics consists of a two lens aspheric assembly having anti reflective coating. The image space f-number of F/0.8 was a good compromise between high temperature and spatial resolution.